eBay are not going to help
They do not enforce warranties
And, unless you bought from an authorised seller/re-seller registered in Australia, there is no warranty
Regardless of what the listing said
If you did indeed buy from a seller authorised to sell it , and they are not responding to your messages, you will need to go directly to the company website or head office instead
It is especially unlikely there is a real warranty when you mostly choose dodgy sellers in China to buy from
